: a 4-sided sail extended on a yard suspended at the middle from a mast
Examples of square sail in a Sentence
Recent Examples on the WebAccording to Bill Nye, the advent of CubeSats actually led to the current square sail design.
Amy Thompson, Smithsonian, 25 June 2019 After seven days in space, LightSail 2 will pop out of its container, extend four long booms, and deploy four sheets of mirror-like Mylar plastic into a 340-square-foot, square sail.
NBC News, 3 June 2019 When the wind blew favorably, the crew would have hoisted a square sail on the mast; the rest of the time, rowers would have lined up on the benches and propelled the ship along with large oars.
Kiona N. Smith, Ars Technica, 24 Oct. 2018
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'square sail.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.